Hi All.
I wonder if this problem has been seen before, when I use install_downloads.sh it asks for the password with every file copy. I persevered and got the system up and running but entering the password multiple times became tedious. I have searched the forums for any similar issues but was unsuccessful?
I had the problem on the original update from Sierra to High Sierra and then updating to 13.6.
I checked my keychain just in case but saw no errors.
It's done now but just in case I re-install..